Press for molding building-blocks.



'No. 769,819. PATENTED SEPT. 13, 1904.

G. H. DENTON. v PRESS FOR MOLDING BUILDING BLOCKS.

APPLICATION FILED DEO.16, 1903.

N0 MODEL.

IN VEN T OR.

I I ITNESSIZS:

UNITED STAT S Patented September 13, 1904.

GILBERT H. DENTON, OF DENVER, COLORADO, ASSIGNOR TO JOHN ALBERTFERGUSON, OF DENVER, COLORADO.

PRESS FOR MOLDING BUILDING-BLOCKS.

SPECIFICATION forming part of Letters Patent No. 769,819, datedSeptember 13, 1904.

Application filed December 15, 1903. Serial No. 185,272. (No model.)

T 0 all whom, it may concern:

Be it known that I, GILBERT H. DENTON, a citizen of the United States,residing at Denver, in the county of Denver and State of Colorado, haveinvented certain new and useful Improvements in Presses for MoldingBuilding-Blocks; and I do declare the following to be a full, clear, andexact description of my invention, such as will enable others skilled inthe art to which it appertains to make and use the same, reference beinghad to the accompanying drawing, forming a part of this specification,in which similar letters of reference indicate corresponding parts.

My invention relates to a class of presses adapted to be used forpressing buildingblocks composed of cement or any composition materialthat will harden when seasoned.

The objects of my invention are to provide a press that will beefiicient for the purposes for which it is adapted, one that is simplein its construction and operation, and one that can be readily adjusted.

I refer now to the drawing in further eX- plaining the nature andobjects of my invention, in which the figure is a central longitu' dinalcross-section of my invention.

In more fully referring to the drawing, A represents the base of thepress, preferably constructed of cast-iron. It is provided with foursets of lugs similar to those shown in the drawing. Those shown in thedrawing are indicated by A and A These lugs have apertures extendingtherethrough, as illustrated. The base A has four upright posts securedthereto, as Will be made manifest by consulting the drawing. The postsshown in the drawing are represented by A and A.

B designates the cast-iron platform, which is provided with apertures inthe four corners thereof through which the upright posts are adapted topass,as illustrated. The platform B is slidably mounted on the posts Aand A and is provided, on the bottom thereof, with lugs similar to thoseshown on the drawing. (Designated by B and B for the uses hereinafterspecified.) A pair of vertically disposed brackets (one of which isindicated by A are secured in a suitable manner to the base portion A.These brackets have bearings or journal-boxes through which passes theshaft or journal. (Indicated by A Secured to this,

journal are .two cranks, one of which is represented by A To thesecranks are pivoted four bars or rods (two of which are designated by Aand A in the manner shown in the drawing. The opposite ends of thesebars or rods are pivoted to suitable toggle-arms, as illustrated in thedrawing and indicated by A A, A and A. These toggle-arms are pivoted tothe lugs on the base A and on the movable platform B. Two levers arekeyed to the shaft A (one of which is indicated by A) by means of whichsaid shaft is revolved, causing the cranks to force the toggle-arms"into a horizontal position by means of the rods or bars connecting saidcranks with said toggle-arms, which in turn raise the movable platform.(Represented B.)

O represents an adjustable frame provided with apertures in the cornersthereof and adapted to be moved upward and downward by means ofinternally-threaded nuts, (two of which are designated by O and C saidnuts being rotatably mounted on the frame, as shown, and adapted toengage the externallythreaded ends of the posts A and A These nuts areprovided with sprocket-teeth, (indicated by O and O*,) and over whichthe sprocket-chain (designated by C is adapted to operate, thusfacilitating the adjustment of all the nuts simultaneously, as will bemade manifest by consulting the drawing.

It is obvious that the operation of my press is simple and as follows:The adjustable frame O is first placed at such a height that thedistance between that plate and the plate B is such as to make thefinished block of the right thickness. The mold containing the materialto be pressed is then placed upon the movable platform. (Represented byB.) The lever is then thrown downward, which operation forces themovable platform B upward, thus effectually pressing the parts of themold together and producing the desired result upon the materialcontained in the mold.

Having thus described the nature and objects of my invention, togetherwith the manner of constructing and applying the same, WhatI claim asnew, and desire to secure by Letters Patent of the United States, is

1. In a press, the combination with a base, of the threaded guide-rodssecured thereto, a platform slidably mounted on the guide-rods, anadjustable frame carried by said rods and arranged above the movableplatform, adjusting-nuts provided With peripheral teeth rotatablymounted on said frame and engaging the th read ed ends of theguide-rods, a sprocketchain engaging the teeth on said adjustingnuts,and means for reciprocating the platform, substantially as specified.

2. In a press, the combination With a base, of the supporting-bracketssecured thereto, a shaft provided with crank-arms journaled in saidbrackets, vertically-disposed threaded guide-rods secured to the base, aplatform I toggle-levers connected to the crank-arms and pivoted to thebase and movable platform, respectively, for reciprocating the latter,substantially as specified.

In testimony that I claim the foregoing as my own I hereunto subscribemy name in the presence of two Witnesses.

GILBERT H. DENTON.

Witnesses:

HARMON H. RICE, ORA LAssWELL.

